NDLI: Optimizing path expression queries of XML data

Content Provider	IEEE Xplore Digital Library
Author	Yang Li Ping Yi Qiyan Li
Copyright Year	2005
Description	Author affiliation: CAD Res. Center, Tongji Univ., Shanghai (Yang Li)
Abstract	With the advent of XML as a standard for data representation and exchange on the Internet, storing and querying XML data becomes more and more important. This poses a new challenge concerning indexing and searching XML data, because conventional approaches based on relational model may not meet the processing requirements for XML data. In this paper, we propose a path index based on Patricia-tries, namely PT index. Our PT index structure offers several novel features. First, it can support to fast search data by its structure based on Patricia-tries. Second, the path indexes are compressed so that they can be stored in memory. Thirdly, because PT index includes structure and text of XML data, we can get the results from the PT index without reading original XML data from disk. We further analyze time complexity and space complexity of PT index. Experimental results from our prototype system implementation show that the PT index can outperform some representative index approaches, such as DataGuide, B+ tree index and Index Fabric
Sponsorship	IEEE Comput. Soc., Tech. Comm. on Electron. Commerce (TCEC)
Starting Page	497
Ending Page	504
File Size	577753
Page Count	8
File Format	PDF
ISBN	0769524303
DOI	10.1109/ICEBE.2005.93
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-12
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Navigation Query processing XML Information security Data engineering Fabrics Data models Internet Indexes Database languages
Content Type	Text
Resource Type	Article

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